Question

Evaluate: ${\left\{\sqrt{3^2+4^2}\right\}}^3$

• A. 25
• B. 125
• C. 343
• D. 15, 625

Answer 1

The correct option is B 125

${\left\{\sqrt{3^2+4^2}\right\}}^3={\left\{\sqrt{9+16}\right\}}^3$
$={\left\{\sqrt{25}\right\}}^3$
$={\left\{\sqrt{5\times 5}\right\}}^3$
$={\left\{5\right\}}^3$
$=125$
So, the option (b) is correct.